Now I know you are going to say "This is not Royalty!" but I don't believe there is collection category for politicians.
A prime minister is as close as you can get. Also in Royalty deprived nations such as the USA, a president counts too. Hence a President Eisenhower plate is listed among Royalty.

This is a beautiful Royal Doulton loving cup with two handles commemorating Royal Doulton loving cup commemorating the Rt. Hon. Mrs. Margaret Thatcher as the first woman Prime Minister of the United Kingdom. It has gold trim all around it and a gold image of Mrs. Margaret Thatcher inside gold laurels and surrounded by banners with the names of prior prime ministers on one side with and on the other side is The Rt. Hon. Mrs. Margaret Thatcher M.P. First woman Prime Minister of the United Kingdom also inside gold laurels and banners with names of political districts or cities surrounding it.

This is a lovely cup with typical Royal Doulton quality and it has a crimped bottom and decorative handles.
It measures almost 3 3/4 diameter at the top and stands almost 4 high.
On the bottom is the Royal Doulton mark with Made in England Bone China and also Royal Doulton Tableware Ltd 1979 and it is in mint condition.
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Margaret Hilda Thatcher, Baroness Thatcher, LG, OM, PC, FRS (née Roberts; born 13 October 1925) served as British Prime Minister from 1979 to 1990 and leader of the Conservative Party from 1975 until 1990, being the first and only woman to hold either post.
She was also considered one of the most powerful leaders of her time and was named Iron Lady by the Soviets due to her strong ties with Ronald Regan and his Anti Communism stance. She also sent the British Navy against the Falkland Island take over.
Thatchers tenure as Prime Minister was the longest since that of Lord Salisbury and was the longest continuous period in office since the tenure of Lord Liverpool who was prime minister in the early 19th century. She was the first woman to lead a major political party in the UK, and the first of only three women to have held any of the four great offices of state. She currently has a life peerage as Baroness Thatcher, of Kesteven in the County of Lincolnshire, which allows her to sit in the House of Lords.